11.24: Two wave pulses travel to the right to16lz ua6dvr7 m)wf-x*w2j/ hsi hem-zward a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the supe*7zj 2 )z-ieh6vxwhlfsm-6ur/mad w1rposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam prc-6+u :foc6ns r6uee*lqzq5 asses through the air and strikes the surface of a plastic block. Which pair of statements correctly describes the phase changes for the reru:f+o*qu6cq 6nl5 6rzs-ec eflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward throug(gqbi( qw1o -eh the point labeled B in the diag qiq1(eo-wg (bram shown. The ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflecps73xdhfebiy8c :7b3z yy3 r*tion occurs whenever light is incident on

  05.18: A student hold a hand mirror to observe theyxkr6-i3q0hc k 2k ypxv)v9r+ 8/yorz back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head,kvv0c2/ +prr96k 8yrhy zk o3qx ixy)- she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray chan/2+(/,jow wgexbkd;j4edgpb aeh f9/ ges direction when it enters a new material. Which ow g/+ok g9e4 d/(w;b,j2ej/feahx dbpne of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelength 400 nm in a 78oe,rjlnq6h transparent material. What is the index of refraction of thrhqel867o,jn e material?

  98.04: As sound travels from steel into air, both its speed and ito3m j nq5l3svbc)9vls.l ;.2 2quzweus:

  00.01: As a wave moves from one medium to a second medium with a differikqvfi9 v5v:z:rwe+1t s9 yv3ent index of refraction which of the following wave properties would NEVER change?s+ vv:9freq :yii k5vw1zt 3v9

  05.47: A sound wave generated i;alv.fi;sy5ve0, e ;q4xbt pfrom a tuning fork of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air tos i y.4ae; b 5vlivx,0e;q;tpf rock?

  14.28: A waterproof speaker placed at the bottom of a swimming pool emixai.twbh,q /e 5u* u*its a sound wave that travels toward the surface of the *5h./,axewi uiu qbt*water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block wip qglcu,j.o-g*ms:.(p;yek 6)k b wvg th an angle of ewb(sqv o.u gg -mc)p*; :jpl.kk yg,6incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a poin0;9it ai)yp a0 0dwwtk,o/o2q iywf8 rt P on a boundary as shown to the right. Which segment best represents the refracted rayy 280;kwpf,wa )oatqo 0ii/ yw9idr 0t?

  98.17: Which diagram best represen ug2 pmpxx35d3i 2*r6 q0kgnuits what happens to a ray of light entering air from water? Air is at the top in ag5g32nr mi x 0*qpu6u2id3xkpll diagrams.

  94.11: The critical angle of a material is the angle of incqx, mgc- swr 5px9)k+uidence for which the angle of refraction m 5,sx)qpcugk 9 rw-+xis:

  95.12: The principle underlying fiber op wbks4eq3jp5 ) l;)anitics is:

  98.36: The critical a)yjg82(dn c7/lwmtml x ifx(9ngle in a transparent substance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from materin3 w2w4lpv nebntps3 (9q3;f/pw hhi)al X with an index of refraction of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y qw9hppp nn2f;swh3l e (wv3b n4t)i/3 is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamon ;7w mkz 0-p3 )ndk)olq si:ski:slt4ud and a piece of glass by observing :w qsk muzkl3n7pk4i:ios t-)0;l)dsthe critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into cn,;8 gi* yh8 g,vbjzra clear material. When the light makes an angle of incidence eq ,jb8zv ;irg*8yghc,nual to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic la1vvi ,ky +a*zkser is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target.+ikak *1zyv,v See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passqs2()p p fxe 4e;i7mqbes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true eqf ep;2ibxq() 4spm7about the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to me5gf kw1t.kcn ue37u ,*b qm+eldium 3 as shown in the diagram. What may be concluded about the three ig 1k+7m e.q kne*3bwfl,5u ctundexes of refraction, n1, n2 and n3?

  97.24: The accompanying diagram shows the path that a lighthe :dgm: zx4 lful0gk(8c g -ad(1mn(o ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which1o4cz 0 8n(ghm ldkl:x(g af eu:(-dmg of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a mon ive1cd2k06 ciochromatic light ray traveling through three media.Thede60c2 cvki i1 symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of lig2vha:m;72 vjn r ,3iiubh bxw1ht traveling in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the surface5+lta31rt. ge 6 zgayc4m;oih of a rectangular block of glass at an a ez tr6mh+ao5.g43 lgta1;cyingle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted from air into aiifb5p(zdv(8 ge h ht , 6v6ykaekw,++ piece of glass. Which gtk , (b wi5eved6yp8 6,fhz +vai+kh(one of the labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as6kioc t kh2sezt2o)3 vfveo );vtvk 8r-nt4./ shown. The glass has an index of refraction of 2.00 and it2t .-vi)kfetso 6vevh;kz3vt n4 torko)/28c is surrounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?